Combination desk and seat for school-rooms.



G. H. W. KNIGKREHM. COMBINATION DESK AND SEAT FOR SCHOOL ROOMS.

APPLICATION FILED 0013.20, 1913.

Wake 24 ,44-

QCLW

THE NORRIS PETERS c0, WASHINGTON, Dv c.

G. H. W. KNIGKREHM. COMBINATION DESK AND SEAT FOB, SCHOOL ROOMS.

Patented July 14,1914.

2 SHBETSSHEET 2.

APPLIUATION FILED O0T.20, 1913.

THE NqRRIs PETERS UNTTED sra'rns a'rnn'r orrucn.

1 CHARLES I-L W. KNIGKREI-IM, OF FOREST PARK, ILLINOIS. I

COMBINATION DESK AND SEAT FOR SCHOOL-ROOMS.

To all whom it may concern Be it known that I, CI-IARLEs H. W.KNi'oKRm-IM, a citizen of the United States, and a resident of the cityof Forest Park, county of Cook, and State of Illinois, have inventedcertain new and useful Improvements in Combination Desks and Seats forSchool-Rooms, of which the following is a specification.

My invention relates to school furniture and more specifically to acombination school desk and chair.

The object of my invention is the production of a combination schooldesk and chair which will be of an adjustable nature so as to adapt thesame for use in the various grades of a school or for pupils of variousages and sizes.

A further object is the production of a piece of school furniture asmentioned which will be of durable and economical construction andeflicient in use.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

' Figure 1 is a side elevation of a comb1nation school desk and chairembodying my invention, a portion thereof being broken away and shown insection, Fig. 2 is a section taken on line 00a2 of Fig. 1, Fig. 3 is arear elevation of the device, Fig. 4c is a top plan view of the desk ofthe device, and Fig. 5 is an enlarged detail section taken on line 'yyof Fig. 4.

The preferred form of construction as illustrated in the drawingscomprises a base 1 of hollow construction and formed preferably of sheetmetal. Mounted for vertical adjustment in the base 1 are two posts 2 and3, the post 3 being divided longitudinally into two sections 3. Saidposts 2 and 3 are releasably secured in positions of vertical adjustmentby means of clamping jaws 1 and 5 respectively, there being a pair ofjaws cooperating with each of said posts, as clearly shown in Fig. 2.The inner ends of said jaws are pivotally secured in position by meansof transversely extending pins 6, the opposite ends thereof beingadapted to engage against the converging opposite sides of said posts asshown. Said jaws are held Specification of Letters Patent.

Application filed October 20, 1913.

Patented July 14, 1914.

Serial No. 796,235.

in clamping relation by means of bolts 7 and nuts 8 threaded upon saidbolts which are adapted to move said jaws toward each other or intoclamping relation with the posts as will be readily understood. The

outer ends or heads of the bolts 7 project eX- teriorly as shown so thatthe same may be engaged by a wrench or key in order to r0- tate thesame. The nuts 8 fit square apertures formed in the adjacent wall of thebase 1 whereby said nuts are held against ing aws are moved intoengagement therewith.

Cooperating with each of the posts is a stop block 10 held in positionby means of j a screw 11 which projects through an elongated slot 12provided in the adjacent wall of base 1. The blocks 10 serve as will bereadily understood to hold the posts 2 and 3 in engagement with theclamping jaws, it being clear that without this provision said postswould move from engagement with the inclined surfaces of the clamping{jaws when the latter were moved into engagement therewith. By providingelongated slots 12, slight rotary adjustment of the members 10 ispermitted in order to adapt the same to conform with the positionsassumed by the posts when engaged by the clamping jaws. The upper end ofthe base 1 is closed by plates 13 which are secured in position by thumbscrews 13 which engage slot-ted ears provided at the lateral edges ofsaid plates, said plates preventing the entrance of dust into the baseand otherwise serving to finish off the upper end thereof.

Mounted upon the upper end of the post 2 is a plate 14 to which isrigidly secured a seat back 15 which arises therefrom, being inclinedpreferably slightly rearwardly. Pivoted at 16 to the lower end of back15 is a seat 16 adapted when in operative positionto be supported uponthe plate 14: as shown, said seat being adapted to be swung to verticalposition when not in use in order to prevent the accumulation of dustthereon. Mounted upon the upper end of the post sections .3 is a deskcomprising a bottom piece 17 which is secured directly as by bolts orrivets to the upper ends of said post 7 sections, braces 18 beingemployed to effect a more rlgld and firm connection between said postsections and said member 17. The

of inwardly extending angular flanges 22.

provided at theupper edges of said walls which interlock, with angularengaging strips 23 secured upon the under side of said top, as clearlyshown in Fig. 5. The

arrangement 1s such, as will be observed,

that saidtop 21 will be locked'to. the lateral walls 19 but in such a.manner as to permit of rearward sliding or extending thereof in order toadapt the desk for use with children or pupils of various ages or sizes,it being clear that with a small child the top will be moved rearwardlyso as to be more readily accessible. rearwardly, a gap is formed at theforwardend thereof between the same and a stationary strip 21, this gapbeing spanned by a: strip or plate 24 of sheet metal secured upon theunder side. of said top projecting forwardly therefrom, as clearly shownin Figs l and 4s.

With a construction as set forth it will.

be seen that the chair or seat and the'desk -may be readily and easilyvertically adjustedin orderto accommodate children of various sizes orages. By forming the post 3 of two independently adjustablesections 3ready leveling of the desk is rendered possible it being clear that withthis ar-' rangement I if the base is not level or is mounted upon anuneven floor the desk may be readily and quickly leveled by simply adjusting said post sections. The construction is durable and economical,and the arrangement is of neat and finished appearance While I haveillustrated and described the 1 preferred form of construction forcarry- 1 ing my invention into effect, this is capable Copies of thispatent may be obtained for five cents each; by. addressing theCommissioner of Patents,

When said top is thus moved therefore, do not wish to be limited tothe"v precise details of construction set forth, but desire to availmyselfof such variations and modifications as-come within the scope ofthe appendedclaims.

' Having described my invention. what I claim as new and desire tosecurebyLetters Patent is:

1. A device of the kind described com prising a hollow base; apostextending into said base; a pair of clamping jaws in said base engagingsaid post; a rivet passing through said base and said jaws; and a boltpassing throughsaid jaws and adapted to adjust the latter, the head ofsaid bolt being extended from said base for manual operation thereof andthe nut of said bolt being held by said'base to prevent rotationthereof, substantially as described.

2.-A device of the kind described comprising a hollow base; a posttriangular in cross section extending into said base; a block in saidbase against one side of said post; a pair of clamping jaws in said basewith one end of each jaw engagingone side of said post; arivetpassingthrough the other end of each of said jaws and said base;and a bolt passing through said jaws and adapted to maintainthe latterinoperative condition, substantially as described. I

3. A device v of the kind described com- :prising a hollow base havingperforations therein, one of said perforations being square; a postextendinginto said base; a block between the inner wall of said base andsaid post; two clamping jaws in said base, each havingone end thereofengaging one side of said post, said block and jaws cooperating .to holdsaid post in position; a rivet extending through the other ,ends of saidjaws and said base; a threaded bolt passing through said jaws andhaving'its' threaded. end in said square perforation and its'headdisposed in one ofthe other, of said.

perforations; and a nut threaded on said bolt, disposed in and fittingsaid square perforat-ion, said bolt and nut cooperating'to operatesaid'jaws, substantially as described. In testimony whereof I havesigned my JosHUA R. H. Porrs, I'IELEN F. L1LLis.

Washington, D. '0.

oi- ARLEsH. w. KNIOKREHM." I i ,nameto this specification in thepresence of

